* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -o-box-sizing: border-box;
  -ms-box-sizing: border-box;
  box-sizing: border-box; }

html, body {
  font-size: 62.5%;
  height: 100%;
  padding: 0;
  margin: 0;
  scroll-behavior: smooth; }

body {
  font-family: YuMincho, "Yu Mincho", "Hiragino Mincho ProN", "serif";
  text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  line-height: 1.6;
  color: #303030;
  letter-spacing: 1px;
  font-size: 1.5rem;
  font-weight: 400; }

h1, h2, h3, h4, p, dl, dt, dd, img, a, div, figure {
  padding: 0;
  margin: 0;
  font-weight: normal; }

ul, ul > li {
  margin: 0;
  padding: 0;
  list-style-type: none; }

img {
  width: 100%;
  height: auto;
  vertical-align: top; }

table {
  border-collapse: collapse; }

a {
  text-decoration: none;
  color: #1d1d1d;
  -webkit-transition: all 0.2s linear;
  transition: all 0.2s linear;
  outline: none; }

a:hover {
  text-decoration: none;
  -webkit-transition: all 0.2s linear;
  transition: all 0.2s linear; }

h2 {
  font-size: 3rem;
  margin-bottom: 2em; }
  h2 small {
    font-size: 2rem; }

.h_en {
  font-size: 1.6rem;
  margin-left: 2em;
  color: #aaa; }

p {
  margin-bottom: 1em; }

article {
  position: relative;
  overflow: hidden; }
  article .bottom_title {
    font-family: 'Noto Serif Display', serif;
    position: absolute;
    bottom: 0;
    right: 0;
    font-size: 20rem;
    line-height: 15.5rem;
    letter-spacing: -0.02em;
    padding: 0;
    opacity: 0.5;
    filter: opacity(50%);
    mix-blend-mode: exclusion; }

@media screen and (max-width: 750px) {
  article .bottom_title {
    left: 0;
    font-size: 14rem;
    line-height: 10.5rem; } }
section {
  padding: 10%; }

#header {
  background: #494b5a url("../images/line.png") repeat-x left 0 bottom 20px; }
  #header .header_body {
    max-width: 1400px;
    height: 60vh;
    position: relative;
    margin: 0 auto;
    background: url("../images/mv.png") no-repeat 0 50%;
    background-size: 48% auto; }
    #header .header_body .sitename {
      max-width: 400px;
      position: absolute; }

@media screen and (min-width: 941px) {
  #header .header_body .sitename {
    right: 8%;
    bottom: 90px; } }
@media screen and (max-width: 940px) {
  #header .header_body {
    background-position: 50% 100%; }
    #header .header_body .sitename {
      top: 10%;
      left: 50%;
      transform: translate(-50%, 0); } }
#items {
  background: #d5e4f3; }
  #items .item_wrapper {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around; }
    #items .item_wrapper .item_details {
      width: 60%; }
    #items .item_wrapper figure {
      width: 35%; }
    #items .item_wrapper .number {
      font-family: 'Noto Serif Display', serif;
      font-size: 5vw;
      line-height: 1; }
    #items .item_wrapper h3 {
      font-size: 2.4rem;
      margin-bottom: 1em; }
      #items .item_wrapper h3 .h_en {
        color: #70a8df;
        font-size: 1.4rem; }
    #items .item_wrapper img {
      box-shadow: 20px 20px 30px -8px rgba(0, 0, 0, 0.3); }
    #items .item_wrapper .item {
      display: flex;
      flex-wrap: wrap;
      margin-bottom: 6%; }
      #items .item_wrapper .item .item_left {
        width: 30%; }
      #items .item_wrapper .item .item_right {
        width: 60%; }

@media screen and (max-width: 750px) {
  #items .item_wrapper {
    flex-wrap: wrap; }
    #items .item_wrapper .item_details {
      width: 100%;
      order: 1; }
    #items .item_wrapper figure {
      width: 100%;
      order: 0;
      padding: 10% 0 18%; }
    #items .item_wrapper .number {
      font-size: 12vw; }
    #items .item_wrapper .item {
      position: relative; }
      #items .item_wrapper .item:not(:last-of-type)::before {
        content: "";
        width: 20%;
        height: 1px;
        background: #ccc;
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translate(-50%, -10px); }
      #items .item_wrapper .item .item_left {
        width: 100%;
        margin-bottom: 10px; }
      #items .item_wrapper .item .item_right {
        width: 100%;
        margin-bottom: 30px; } }
#mint {
  background: #575757;
  color: #fff; }
  #mint .section_inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center; }
    #mint .section_inner figure {
      width: 45%; }
    #mint .section_inner .summary {
      width: 50%; }

#list {
  background: #f8f8ea; }
  #list section:not(:last-of-type) {
    padding-bottom: 0; }
  #list .grade:not(:last-of-type) {
    margin-bottom: 100px; }
  #list ul {
    display: flex;
    flex-wrap: wrap; }
    #list ul li {
      width: 3%;
      background: #e3e3dc; }
  #list #term_02 img,
  #list #term_03 img {
    mix-blend-mode: multiply; }
  #list h3 {
    font-size: 2.4rem;
    margin-bottom: 1em; }
  #list figure {
    position: relative; }
    #list figure .soon {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      font-size: 3rem;
      width: 50%;
      padding: 20px;
      text-align: center;
      background: #2b3036;
      color: #fff; }

@media screen and (max-width: 750px) {
  #mint .section_inner figure,
  #mint .section_inner .summary {
    width: 100%; }
  #mint .section_inner figure {
    margin-bottom: 30px; }

  #list .grade {
    margin-bottom: 100px; }
  #list ul li {
    width: 20%; }
  #list figure .soon {
    font-size: 1.4rem;
    width: 70%;
    padding: 20px 10px; } }
#opensea h2 {
  text-align: center;
  margin-bottom: 0;
  padding: 1em; }
  #opensea h2 img {
    max-width: 200px; }
#opensea .banner {
  background: url("../images/banner.jpg") no-repeat 50%;
  background-size: cover;
  position: relative;
  height: 400px; }
  #opensea .banner a {
    position: absolute;
    display: block;
    background: rgba(255, 255, 255, 0.95);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    width: 50%;
    padding: 20px;
    text-align: center;
    box-shadow: 5px 5px 30px -8px rgba(0, 0, 0, 0.5); }
    #opensea .banner a:hover {
      color: #fff;
      background: rgba(1, 1, 1, 0.95); }

footer {
  background: #2b3036;
  text-align: center;
  color: #fff;
  padding: 10% 10% 5%; }
  footer ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    margin-bottom: 100px; }
    footer ul li {
      text-align: left; }
  footer a {
    color: #fff;
    display: block; }
  footer .sns a {
    padding-left: 30px; }
  footer .insta {
    background: url("../images/i_ig.png") no-repeat 0 50%;
    background-size: 20px auto;
    margin-bottom: 1em; }
  footer .twitter {
    background: url("../images/i_tw.png") no-repeat 0 50%;
    background-size: 20px auto; }

@media screen and (max-width: 750px) {
  footer {
    padding-bottom: 10%;
    text-align: left; }
    footer ul {
      margin-bottom: 50px; }
      footer ul li {
        width: 100%; }
        footer ul li:first-child {
          margin-bottom: 40px; } }